Chapter 12, Problem 22QRT

(a)

Interpretation Introduction

Interpretation:

A chemical equation for the below given equilibrium system has to be written.

  $\text{K=}\frac{{{\text{(P}}_{{\text{H}}_{\text{2}}\text{S}}\text{)}}^2{({\text{P}}_{{\text{O}}_{\text{2}}})}^3}{{{\text{(P}}_{{\text{SO}}_{\text{2}}})}^2{({\text{P}}_{{\text{H}}_{\text{2}}\text{O}}\text{)}}^2}$

Concept Introduction:

Equilibrium constant: At equilibrium the ratio of products to reactants (each raised to the power corresponding to its stoichiometric coefficient) has a constant value, K

For a general reaction,

  $\text{aA+bB}\rightleftarrows \text{cC+dD}$

  $\text{Equilibrium}\text{constant}\text{K}\text{=}\frac{{\left[\text{C}\right]}^{\text{c}}{\left[\text{D}\right]}^{\text{d}}}{{\left[\text{A}\right]}^{\text{a}}{\left[\text{B}\right]}^{\text{b}}}$

The concentration of solids and pure liquids do not change, so their concentration terms are not included in the equilibrium constant expression.

(b)

Interpretation Introduction

Interpretation:

A chemical equation for the below given equilibrium system has to be written.

  $\text{K=}\frac{{{\text{(P}}_{{\text{F}}_{\text{2}}}\text{)}}^{1/2}{({\text{P}}_{{\text{I}}_{\text{2}}})}^{1/2}}{{\text{(P}}_{\text{IF}})}$

Concept Introduction:

Refer part (a) for concept.

(c)

Interpretation Introduction

Interpretation:

A chemical equation for the below given equilibrium system has to be written.

  $\text{K=}\frac{{[{\text{Cl}}^{-}]}^2}{{\text{(P}}_{{\text{Cl}}_{\text{2}}}){[{\text{Br}}^{-}]}^2}$

Concept Introduction:

Refer part (a) for concept.